furman



(No Model.)

0. E. P'URMAN.

VENTILATING VAULT COVER.

No. 302,476. Patented July 22, 1884.

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UNITED STATES PATENT @rrrcn.

7 CHARLES E. FURMAN, OF NEW YORK, N. Y.

VAULT-COVER.

SPECIFICATION forming part of Letters Patent No. 302,476, dated July 22, 1884.

Application filed February 16, 1884. (No model.)

To all whom it may concern.-

Be it known that LOHAnLEs E. FURMAN, of New York city, in the county of New York, and in the State of New York, have invented certain new and useful Improvements in Ventilating Vault-Covers; and I do hereby declare that the following. is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in Which- Figure 1 is a perspective view of a tile or vault-cover containing my improved ventilators. Fig. 2 is a like view of one of the Ventilating-thimbles separate from the tile, and

Fig. 3 is a vertical section upon line or m of Fig. 1.

Letters of like name, and kind refer to like parts in each of the figures.

The design of my invention is to enable 2O coal-vaults, covered areas, &c., to be ventilated through the ordinary covering-plates; to which end said invention consists, principally, in a vault-cover, illuminating-tile, &e. com posed of a metal plate provided with lightopenings, metal thimbles, having downward flaring open centers placedover a part or the whole of said openings, and cement or other like non-slippery substance applied to and caused to fill the space between said thimbles, ,substantial ly asand for the purpose hereinafter specified.

It consists, further, in the construction of the ventilating-thimble, substantially as and for the purpose hereinafter set forth.

In the annexed drawings, A represents a metal plate provided with a recessed upper face, and having at suitable points within its bottom light-openin gs, a, said plate being such as is ordinarily used for covering coal-vaults, 40 areas, basement-extensions, &c., and having such size and shape as will best adapt it to the place which it. is to occupy. Such of the light-openings a as are not required for ven tilatin g purposes are covered by means of glass 5 lens B of any usual form, while for ventilating purposes said openings have placed over each a metal thimble, O, which may have eXteriorl y the form of a plain cylinder, but which is preferably somewhat larger in diameter at its lower end than at its upper end. Interiorly said thimble is open and corresponds in shape to its exterior, and within the opening thus formed are a number of partitions, c,(preferably three,) which extend radially inward from equidistant points around the side wall and unite at the center. Said partitions extend from the upper smaller end of said thimble a portion of the distance between the same and its lower end, and decrease in thickness from their upper to their lower edges. rior of the lower end of the thimble G is intended to just equal in diameter thelight opening a, over which the same is to be placed. When thusin position, said thimble, together with the lenses B, are securely fastened by means of cement D or other like material, which is applied in a plastic or semi-fluid state to the space between said parts, and is caused to fill said space flush with the upper edges of the same. The surface thus formed is practically the same for walking purposes as are those in which all of the openings are covered by glass lenses, and butlittle if any Water will pass through the thimbles, while for the space below said thimbles allord ventilation which is more or less complete, as the number of the same correspond to the dimensions of said space.

In consequence of the tapering form of the partitions, the spaces between the same and the side wall of each thimbleincrease in horizontal dimensions from their upper ends downward, and are not liable to become clogged by dirt, snow, or ice, while in case of thimbles in which the side walls are flaring such increase I in the dimensions of the aircpenin'gs is more marked, and greater opportunity for clearance is afforded.

the front wall of the building, it will often prove advantageous to place one or more rows of ventilating-thimbles adjacent to the building, in which position they are protected in a capable of fulfilling their design as though placed in a more exposed position.

Having thus fully set forth the nature and merits of my invention, what I claim as new 1s- 1. A vault cover, illuminating-tile, 850., composed of a metal plate provided with lightopenings, metal thimbles having downwardflaring open centers placed over a part or the whole of said openings, and cement or other The into In case of area-covers which extend up to great measure from water and dirt, and are as l like non-slippery substance applied to and In testimony that I claim the foregoing I caused to fill the space between said th-imbles, have hereunto set my hand this 11th day of substantially as and for the purpose specified. December, 1883.

2. The thinible 0, provided Within its open I a center with the partitions c, and adapted for I use within or over a light-opening of a vault I Vitnesses: cover, illun'linating-tile, &c., substantially as GEO. S. PRINDLE,. and for the purpose set forth. I E. P. GLEASON.

CHAS. F. FURMAN. 

